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经营范围
发明名称
Long dash interrupter
摘要
申请公布号
US2332142(A)
申请公布日期
1943.10.19
申请号
US19410373071
申请日期
1941.01.04
申请人
RADIO CORPORATION OF AMERICA
发明人
HAJOS EUGENE
分类号
H04L27/04
主分类号
H04L27/04
代理机构
代理人
主权项
地址
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